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本文提出了一个能有效地支持ＶＬＳＩ设计的面向对象的方法，它主要包括数据的管理和工具的控制。它采用一个数据模型（称为ＤＴＯ模型）刻划设计对象，由四个基本参量（设计对象类，设计方法，历史版本，等价视图）唯一确定。为了进行设计方法的描述，开发了一种描述工具特征的设计方法扩展描述语言（ＤＭＥＬ）。采用设计事件堆栈的方法用于工具的控制，实现了动态的设计流程调度机制（ＤＤＦＳ）。ＤＴＯ模型结合ＤＤＦＳ，成功地提供了设计支持框架（Ｆｒａｍｅｗｏｒｋ）所应具有的最重要的功能：数据的透明及一致性维护、版本控制、数据的层次和多维视图描述、设计流程的自动控制等。基于上述思想，开发成功了一个支持门阵列自动设计的集成框架，在实际的芯片设计中显示出良好的特性。
This paper presents an object-oriented approach that effectively supports VLSI design, which includes data management and tool control. It uses a data model (called the DTO model) to sculpt a design object and is uniquely identified by four basic parameters (design object class, design methodology, history version, equivalent view). In order to describe the design method, a Design Method Extension Description Language (DMEL) that describes the features of tools has been developed. The design event stack is used for the control of tools to implement a dynamic design flow scheduling mechanism (DDFS). The DTO model, combined with DDFS, successfully provides the most important capabilities that the Design Support Framework should have: data transparency and consistency maintenance, version control, data hierarchy and multidimensional view descriptions, and automatic control of the design process. Based on the above ideas, an integrated framework that supports the automatic design of gate arrays has been successfully developed, which shows good characteristics in the actual chip design.